var app = new Vue({
    el: "#activity-list",
    data: {
        host: host,
        username: sessionStorage.username || localStorage.username,
        user_id: sessionStorage.user_id || localStorage.user_id,
        avatar_url: sessionStorage.avatar_url || localStorage.avatar_url,
        token: sessionStorage.token || localStorage.token,
        nick_name: sessionStorage.nick_name || localStorage.nick_name,
        page: 1, // 当前页数
        page_size: 10, // 每页数量
        count: 0,  // 总数量

        // 页面中需要使用到的数据，键值对
        activities: []
    },
    computed: {
        total_page: function () {  // 总页数
            return Math.ceil(this.count / this.page_size);
        },
        next: function () {  // 下一页
            if (this.page >= this.total_page) {
                return 0;
            } else {
                return this.page + 1;
            }
        },
        previous: function () {  // 上一页
            if (this.page <= 0) {
                return 0;
            } else {
                return this.page - 1;
            }
        },
        page_nums: function () {  // 页码
            // 分页页数显示计算
            // 1.如果总页数<=5
            // 2.如果当前页是前3页
            // 3.如果当前页是后3页,
            // 4.既不是前3页，也不是后3页
            var nums = [];
            if (this.total_page <= 5) {
                for (var i = 1; i <= this.total_page; i++) {
                    nums.push(i);
                }
            } else if (this.page <= 3) {
                nums = [1, 2, 3, 4, 5];
            } else if (this.total_page - this.page <= 2) {
                for (var i = this.total_page; i > this.total_page - 5; i--) {
                    nums.push(i);
                }
            } else {
                for (var i = this.page - 2; i < this.page + 3; i++) {
                    nums.push(i);
                }
            }
            return nums;
        }
    },
    mounted: function () {
        // 一加载就需要做的，直接是代码
        axios.get(this.host + "/activities/")
            .then(response => {
                // console.log(response)
                //alert(response)
                this.activities = response.data
            })
            .catch(error => {
            })
    },
    methods: {
        // 需要用到的函数，键值对 ，键是名称，值是匿名函数
        logout: function() {
            sessionStorage.clear();
            localStorage.clear();
            location.href = './person-loginsign.html';
        },

        // <a :href="'./activity-detail.html?id=' + a.id" target="_blank">
        // 点击页数
        on_page: function (num) {
            if (num != this.page) {
                this.page = num;
                this.get_comments();
            }
        },

    },
});;;;;;;;;;;;;;;;;



